/* -*-c++-*- */
/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2008-2013 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program.  If not, see <http://www.gnu.org/licenses/>
*/
#ifndef OSGEARTH_ANNOTATION_SETTINGS_H
#define OSGEARTH_ANNOTATION_SETTINGS_H 1

#include <VBF_3DMap/VBF_Annotation/Common>
#include <VBF_Engine/VBF_SceneGraph/VBF_SGNVisitOp.h>

namespace osgEarth { namespace Annotation
{	
    /**
     * Global default settings for controlling annotation behavior
     */
    class OSGEARTHANNO_EXPORT AnnotationSettings
    {
    public:
        /**
         * Whether to apply automatic re-clamping of CLAMP_TO_TERRAIN geometry
         * whenever a terrain tile under the geometry changes due to paging
         * DEFAULT: true
         */
        static void setContinuousClamping( bool value ) { _continuousClamping = value; }
        static bool getContinuousClamping() { return _continuousClamping; }

        /**
         * Whether to apply a depth-adjustment program to any line geometry in an 
         * AnnotationNode that is created with a CLAMP_TO_TERRAIN altitude symbol. 
         * The depth adjustment will mitigate z-fighting for clamped lines in many cases.
         * DEFAULT: true
         */
        static void setApplyDepthOffsetToClampedLines( bool value ) { _autoDepthOffset = value; }
        static bool getApplyDepthOffsetToClampedLines() { return _autoDepthOffset; }

        static void setOcclusionQueryMaxRange( double value ) { _occlusionQueryMaxRange = value; }
        static double getOcclusionQueryMaxRange() { return _occlusionQueryMaxRange; }

    private:
        static double _occlusionQueryMaxRange;
        static bool _continuousClamping;
        static bool _autoDepthOffset;
    };

} } // namespace osgEarth::Annotation

#endif //OSGEARTH_ANNOTATION_SETTINGS_H
